1/* 2 * libjingle 3 * Copyright 2004--2005, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include "talk/xmllite/xmlelement.h" 29#include "talk/base/common.h" 30#include "talk/xmpp/xmppstanzaparser.h" 31#include "talk/xmpp/constants.h" 32#ifdef EXPAT_RELATIVE_PATH 33#include "lib/expat.h" 34#else 35#include "third_party/expat/v2_0_1/Source/lib/expat.h" 36#endif 37 38namespace buzz { 39 40XmppStanzaParser::XmppStanzaParser(XmppStanzaParseHandler *psph) : 41 psph_(psph), 42 innerHandler_(this), 43 parser_(&innerHandler_), 44 depth_(0), 45 builder_() { 46} 47 48void 49XmppStanzaParser::Reset() { 50 parser_.Reset(); 51 depth_ = 0; 52 builder_.Reset(); 53} 54 55void 56XmppStanzaParser::IncomingStartElement( 57 XmlParseContext * pctx, const char * name, const char ** atts) { 58 if (depth_++ == 0) { 59 XmlElement * pelStream = XmlBuilder::BuildElement(pctx, name, atts); 60 if (pelStream == NULL) { 61 pctx->RaiseError(XML_ERROR_SYNTAX); 62 return; 63 } 64 psph_->StartStream(pelStream); 65 delete pelStream; 66 return; 67 } 68 69 builder_.StartElement(pctx, name, atts); 70} 71 72void 73XmppStanzaParser::IncomingCharacterData( 74 XmlParseContext * pctx, const char * text, int len) { 75 if (depth_ > 1) { 76 builder_.CharacterData(pctx, text, len); 77 } 78} 79 80void 81XmppStanzaParser::IncomingEndElement( 82 XmlParseContext * pctx, const char * name) { 83 if (--depth_ == 0) { 84 psph_->EndStream(); 85 return; 86 } 87 88 builder_.EndElement(pctx, name); 89 90 if (depth_ == 1) { 91 XmlElement *element = builder_.CreateElement(); 92 psph_->Stanza(element); 93 delete element; 94 } 95} 96 97void 98XmppStanzaParser::IncomingError( 99 XmlParseContext * pctx, XML_Error errCode) { 100 UNUSED(pctx); 101 UNUSED(errCode); 102 psph_->XmlError(); 103} 104 105} 106